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Matching and Adiabatic Subsurface Errors

asked 2020-09-09 10:31:35 -0500

electroctopus gravatar image

updated 2020-09-09 11:19:04 -0500

Could someone please have a look at my file? I'm getting errors related to Surface area matching, tilt/azimuth angle matching and adiabatic surface errors for doors between 2 thermal zones.

** Warning ** GetSurfaceData: InterZone Surface Areas do not match as expected and might not satisfy conservation of energy:
**   ~~~   **   Area=4.2 in Surface=BATHROOM 1 WALL IN 2, Zone=THERMAL ZONE: BATHROOM 1 THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
**   ~~~   **   Area=1.5 in Surface=BEDROOM 1 WALL IN 1, Zone=THERMAL ZONE: BEDROOM 1 THERMAL ZONE THERMAL

Any help will be very much appreciated.

https://drive.google.com/file/d/1_U-a...

** Warning ** GetSurfaceData: InterZone Surface Tilts do not match as expected.
**   ~~~   **   Tilt=90.0 in Surface=BATHROOM 2 WALL IN 2, Zone=THERMAL ZONE: BATHROOM 2 THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
**   ~~~   **   Tilt=85.3 in Surface=BEDROOM 2 WALL IN 1, Zone=THERMAL ZONE: BEDROOM 2 THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE THERMAL ZONE
** Severe  ** GetSurfaceData: Subsurface="BATHROOM 1 DOOR" is an adiabatic surface in an Interzone base surface="BEDROOM 1 WALL IN 1"
**   ~~~   ** ...calculations for heat balance would be compromised.
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answered 2020-09-09 12:00:33 -0500

image description

Take a look at your model in Sketchup (using either the OpenStudio or Euclid plugins). You'll see there are a number of walls on top of each other, instead of being a single wall. With zone isolation turned on, double click into zones, you'll see walls disappear that should be part of the zone. Also some random walls/doors in the middle of zones. The doors that are different shades of green (in the image below) indicates that they are on overlapping walls, instead of walls shared between two zones.

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Thank you very much sir. Any ideas how I can fix the double wall issue?

electroctopus gravatar imageelectroctopus ( 2020-09-09 13:20:59 -0500 )edit

Delete the walls you don't need and do surface matching again. Make sure when you double click each zone, it contains all the walls that enclose the zone.

ericmartinpe gravatar imageericmartinpe ( 2020-09-09 16:09:05 -0500 )edit

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Asked: 2020-09-09 10:31:35 -0500

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Last updated: Sep 09